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CVE-2026-45226

HIGH

7.1

Description

Heym before 0.0.21 contains an authorization bypass vulnerability in workflow execution that allows authenticated users to execute arbitrary workflows by referencing victim workflow UUIDs without proper access validation. Attackers can create workflows with execute nodes or agent subWorkflowIds pointing to victim workflow UUIDs to load and execute those workflows under attacker-controlled execution paths, exposing victim workflow outputs and triggering workflow nodes with unintended side effects.

CVE Details

CVSS v3.1 Score7.1

SeverityHIGH

CVSS VectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L

Attack VectorNETWORK

ComplexityHIGH

Privileges RequiredLOW

User InteractionNONE

Published5/12/2026

Last Modified5/13/2026

Sourcenvd

Honeypot Sightings0

Weaknesses (CWE)

CWE-863

References

https://github.com/heymrun/heym/commit/3ae3ef6a7d3609da0e910f9ed6b81e99a1661ac8(disclosure@vulncheck.com)

https://github.com/heymrun/heym/pull/93(disclosure@vulncheck.com)

https://github.com/heymrun/heym/releases/tag/v0.0.21(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/heym-authorization-bypass-in-workflow-execution(disclosure@vulncheck.com)

IOC Correlations

No correlations recorded

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